About this item Centerlock rotor tool compatible with 46mm outer diameter 12 groove bottom bracket tool accessories Made of high quality superior CNC aluminum alloy with anodized coating. Compared with the bottom bracket tool made of ordinary materials, it is strong and durable. It has excellent anti-corrosion and anti rust performance and long service life. Suitable for Shimano Race Face Cinch,Hawk Racing BB3086, Zipp Vuma, Rotor BSA30, SRAM DUB,etc Installation requirements: ratchet / torque wrench compatible with 3 / 8 “drive. Please check whether your model is suitable for our products before purchase.